 /* ========================================================================
 * Copyright (c) 2005-2015 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * OTHER DEALINGS IN THE SOFTWARE.
 *
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 * ======================================================================*/
package org.opcfoundation.ua.examples;

import org.opcfoundation.ua.application.Client;
import org.opcfoundation.ua.application.SessionChannel;
import org.opcfoundation.ua.common.ServiceResultException;
import org.opcfoundation.ua.core.ApplicationDescription;
import org.opcfoundation.ua.core.BrowseDescription;
import org.opcfoundation.ua.core.BrowseDirection;
import org.opcfoundation.ua.core.BrowseResponse;
import org.opcfoundation.ua.core.EndpointDescription;
import org.opcfoundation.ua.core.Identifiers;
import org.opcfoundation.ua.examples.certs.ExampleKeys;
import org.opcfoundation.ua.transport.security.KeyPair;

public class DiscoveryExample {

	public static void main(String[] args) throws ServiceResultException {
		
		//////////////  CLIENT  //////////////
		// Load Client's Application Instance Certificate from file
		KeyPair myClientApplicationInstanceCertificate = ExampleKeys.getCert("Cert");
		// Create Client
		Client myClient = Client.createClientApplication( myClientApplicationInstanceCertificate );
		KeyPair myHttpsCertificate = ExampleKeys.getHttpsCert("Client"); 
		myClient.getApplication().getHttpsSettings().setKeyPair(myHttpsCertificate);		
		//////////////////////////////////////
		
		
		////////  DISCOVER ENDPOINTS  ////////
		String uri = "opc.tcp://localhost:62541/";
		//uri = "https://localhost:62541/Quickstarts/DataAccessServer";
		//uri = "https://localhost:62542/Quickstarts/DataAccessServer"
		EndpointDescription[] endpoints = myClient.discoverEndpoints( uri, "" ); 
		for ( EndpointDescription ed : endpoints ) {
			System.out.println( ed );
		}
		//////////////////////////////////////
		
		
		/////////  DISCOVER SERVERS  /////////
		uri = "opc.tcp://localhost:62541/Quickstarts/DataAccessServer";
		// Discover server applications
		ApplicationDescription[] servers = myClient.discoverApplications( uri );
		
		// Choose one application
		ApplicationDescription server = servers[0];
		// Connect the application
		SessionChannel mySessionChannel = myClient.createSessionChannel( server );
		try {
			// Activate session
			mySessionChannel.activate();
//			mySessionChannel.activate("username", "password");
			//////////////////////////////////////

			/////////////  EXECUTE  //////////////		
			BrowseDescription browse = new BrowseDescription();
			browse.setNodeId( Identifiers.RootFolder );
			browse.setBrowseDirection( BrowseDirection.Forward );
			browse.setIncludeSubtypes( true );
			BrowseResponse res3 = mySessionChannel.Browse( null, null, null, browse );
			System.out.println(res3);
			//////////////////////////////////////
		
		
			/////////////  SHUTDOWN  /////////////
			// close the session and the channel from the server
			mySessionChannel.close();
			//////////////////////////////////////		
		
		} finally {
			mySessionChannel.dispose();
		}
		
	}
	
}
